value property

T get value

Gets the current value of the signal.

If read within a reactive context (like an Effect or Computed), it registers that context as an observer/dependency.

Implementation

T get value {
  final active = activeConsumer;
  if (active != null) {
    addObserver(active);
    if (active is DependencyTracker) {
      active.addDependency(this);
    }
  }
  return _value;
}

set value (T newValue)

Sets a new value for the signal.

If the new value is different from the current value (using standard != equality), updates the stored value and notifies all observers. The notification phase is batched to prevent glitches (inconsistent temporary states).

Implementation

set value(T newValue) {
  if (_value != newValue) {
    final oldValue = _value;
    _value = newValue;
    signalObserver?.onSignalChanged(this, oldValue, newValue);
    for (final listener in List.of(_changeListeners)) {
      listener(oldValue, newValue);
    }
    startBatch();
    try {
      notifyObservers();
    } finally {
      endBatch();
    }
  }
}